<!DOCTYPE html>
<html lang="en">
<head><meta charset="utf-i"><title> Demo page </title><link rel="stylesheet" href="main.css"></head>
<body>

<div id="mid">
  <div id="top">    
    
  </div>
  
    <div id="left">
        This is
        <br> <br> <br> <br> <br> <br>
        left
    </div>
    <div id="right">
        This is
        <br><br>
        right
    </div>

  <div id="bottom">
    This is bottom
  </div>
</div>

</body>
</html>
